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SUMAX-10.4mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley SupplySUMAX-10.4mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply
SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley SupplySUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply
SUMAX-8mm Custom Color Plug Wires / FXR-Spark Plug Wires-MetalCore Harley SupplySUMAX-8mm Custom Color Plug Wires / FXR-Spark Plug Wires-MetalCore Harley Supply

Sumax

Since the early 1980s, Sumax has been at the forefront of motorcycle customization, pioneering color anodizing for Harley-Davidson aluminum billet parts. Recognizing the limitations of anodizing, owner Kirk VanScoten shifted focus to powder coating, developing a revolutionary, durable finish that maintained a glass-like smoothness and resisted heat and fading. Today, Sumax leads the Harley aftermarket industry with high-quality powder-coated finishes, offering a wide variety of colors in collaboration with industry giants like House of Kolor and Prismatic Powders. In addition to cosmetic enhancements, Sumax has innovated in electrical components since 1983, designing and distributing high-performance spark plug wires and battery cables in partnership with Taylor Cable. These products, available in multiple colors and with a lifetime warranty, feature advanced core materials for improved conductivity and compatibility with modern electronics. Sumax continues to blend tradition with innovation, guided by a family legacy and a commitment to quality that enthusiasts trust. Whether it’s vibrant, durable finishes or high-performance electrical components, Sumax delivers excellence for motorcycle enthusiasts around the globe.